package com.estore.service;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.ReentrantReadWriteLock;
public class Account {
    private String name; // 账户名称
    private int asset; // 账户资金（单位：分）
    private ReentrantReadWriteLock readWriteLock = new ReentrantReadWriteLock(); // 读写锁

    public Account(String name, int asset) { // 构造方法
        this.name = name; // 属性赋值
        this.asset = asset; // 属性赋值
    }

    public void save(int asset) { // 写锁操作方法
        this.readWriteLock.writeLock().lock(); // 独占的写锁
        try {
            this.asset += asset; // 账户资金累加
            TimeUnit.SECONDS.sleep(1); // 模拟延迟
            System.out.println("【" + Thread.currentThread().getName() + "】修改银行资产，当前的资产为：" + (this.asset / 100.0));
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            this.readWriteLock.writeLock().unlock(); // 释放写锁
        }
    }

    @Override
    public String toString() { // 读锁操作方法
        this.readWriteLock.readLock().lock(); // 共享读锁
        try {
            TimeUnit.MILLISECONDS.sleep(100); // 模拟延迟
            return "【" + Thread.currentThread().getName() + "】账户名称：" + this.name + "，账户余额：" + (this.asset / 100.0);
        } catch (Exception e) {
            return null;
        } finally {
            this.readWriteLock.readLock().unlock(); // 释放读锁
        }
    }
}
